Apparatus for stretching textile fabrics.



P. PARNWORTH, APPARATUS FOR STRETGHING TEXTILE FABRICS.

Patented May 4, 1909.

APPLIOATION IILED MAY 3, 1907.

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FRANK FARNWORTH, OF RAMSBOTTOM, ENGLAND.

APPARATUS FOR STRETGHING TEXTILE FABRICS.

Specification of Letters Patent.

Patented May 4, 1909.

Application filed May 3, 1907; Serial No. 371,643.

To all whom it may concern:

Be it known that I, FRANK FARNWORTH, subject of Great Britain, residingat Rama bottom, in the county of Lancaster, England, Kingdom of GreatBritain, have invented new and useful Improvements in Apparatus forStretching Textile Fabrics, of which the following is a specification.

My invention relates to that type of apparatus for stretching textilefabrics in which a series of rollers, bobbins or tapered. conesrevolving on bent shafts or on shafts arranged at an angle are employedand the object is to provide means whereby the tension roller of thesaid series of rollers can be so raised above a horizontal plane as tocause its middle to lower and its ends to rise, or so lowered below thesame as to cause its middle to rise and its ends to lower and therebysimultaneously decrease in the middle and increase at the selvages thetension of the fabric or vice versa respectively, for the purpose ofstraightening the weft while the fabric is being stretched. I attainthis object by the means illustrated in the accompanying drawing, inwhich- Figures 1 and 4*2 and 5 are end views and plans respectively, andFig. 3 a detached plan of various embmliments of my invention.

Similar letters refer to throughout the various views.

Referring to Figs. 1. and 2, in this case the invention is shown asapplied to a curved similar parts tension roller a composed of revolvingbobbins. roller (1 is rigidly clamped to the arms I) and the latter arerigidly held by the pins or rock shafts e and (Z. These pins or rockshafts are rotatably mounted in bearings f which may have screw-threadedshanks g rotatably attached and held in screw-threaded bearings on theframe ends 1' to permit of vertical adjustment of the bearings f or thelatter may form art of the frame ends 1. One of the said pins or rockshafts, say (Z, has rigidly secured a handle 7L carrying a spring bolt iand the respective bearing f has rigidly secured a notched segment 76.The said handle serves to raise and lower the arms I) and thus also theroller a and the said spring bolt is adapted to engage in one of thenotches of the said segment, and thereby lock the said lever and thusthe pins or rock shafts (Z and e and arms I) in the desired position ofthe roller (1 The fabric to be stretched passes through In this examplethe shaft c of the l the apparatus as shown in dotted lines and in thedirection indicated by the respective arrow in Fig. 1.

When moving the handle 7b in the direction indicated by the respectivearrow, that is to say, when lowering it, the middle of the roller (1 islowered and the ends thereof are simul tancously raised, thussimultaneously taking tension oil the middle and putting tension on thesclvagcs of the fabric as may be required.

-By moving the handle IL in the opposite direction, that is to say, whenraising it, the middle of the roller (0 rises and the ends thereof arelowered, the o )posite effect is exer cised. on the fabric, that is tosay,thc tension is taken off the selvages and put on the middle of thefabric.

- --Rcferring to Fig. 3, which shows my invention also applied to curvedtcnsion rollers composed of bobbins revolving on a shaft c, in this casethe aforesaid radial arms are dispensed with and the pin c has a sockctlcranked to receive the respective end of the roller shaft (1 which issecured thereto while the other end of the roller shaft a iscorrespondingly cranked to form the pin (Z. in this example one of thepins (1, c is also provided with a handle 72 carrying a spring bolt andthe respective bearing with a notched segment, such as shown in Figs. 1and .lteferring to Figs. -11- and 5, which show my invention applied totension rollers (1 made in two parts set at an angle a radial arm I) isalso secured to each outer end of the roller shafts c and secured upon apin (Z, c mounted in bearings as shown in Figs. 1 and 2. To permit ofrocking the pins (1, c and arms 1) simultaneously the latter areconnected to gcther by a bar in. and in lieu of a handle 72 and notchedsegment, such as shown in Figs. 1, 2 and 3, a toothed quadrant 'a may besocured upon the pin d in gear with a worm 0 on a shaft 7 suitablymounted and having a hand wheel g.

I claim:

1. In an apparatus for stretching textile fabrics of the characterdescribed, a cu rvcd shaft, a curved tension roller on the said shaft, abearing adjacent to each outer end of the said tension roller shaft, apin rotatably mounted in each of the said bearings, means rigidlyconnecting each inner pin with the outer ends of the said tension rollershafts and means for turning the said pins to raise or lower the middleof the said roller below or above the horizontal plane in which its'cndslie and means for locking the same in position, all combinedsubstantially as and for the purpose set forth.

2. In an apparatus for stretching textile fabrics of the characterdescribed, a shaft, a tension roller on the said shaft, a bearingadjacent to each outer end of the said tension roller shaft, a pinmounted in each of the said bearings, ineans rigidly connecting eachinner pin end with the outer ends of the said tension roller shafts andmeans for turning the said pins to raise or lower the said roller belowor above a horizontal plane and for locking the same in position, thesaid eans comprising a lever secured to the outer end of the said pins,a notched disk secured to the respective bearing and a spring boltcarried by the said lever adapted to engage in the said notches, allcombined substantially as and for the purpose set forth.

3 In an apparatus for stretching textile fabrics of the characterdescribed, a curved shaft, a curved tension roller on the said shaft, abearing adjacent to each outer end of the said tension roller shaft, apin mounted in each of the said bearings, a radial arin secured to theinner end of each piii and its free end to the ends of the said tensionrollershaft and means for the joint rotary adjustment of the said pinand arms, to raise or lower the DIlCldlG'Of the said tension rollerbelow or above the horizontal plane in which its ends lie, all combinedsubstantially as and for the purpose set forth,

In testimony whereof I have signed 1113' FM name to this specificationin the presence of two subscribing witnesses.

FE; ANK FAR OR TH.

Witnesses JXLFBEDV BossnAnn'r, STANLEY E. BRAMALL.

